Kaoz

+1: Kaoz becomes a 5/4 Demon with haste and menace until end of turn.
+1: Flip a coin. If you win the flip, target opponent discards a card at random. If you lose the flip, Kaoz deals 3 damage to you.
-8: You get an emblem with, "Whenever a creature you control attacks and isn't blocked, it gets +3/+0 until end of turn."